Jan., 1909. Birds of Illinois and Wisconsin — Cory. 

 In winter: No rufous brown on throat or breast. 



37 



Colymbus holboslUi. 

 Holboell's Grebe. 



See No. 2. 



Nostril to tip of bill, over 2 inches ; tarsus and middle toe with claw 

 together, over 5.50 inches. 



In winter: Ends of primaries brown, shading into white at base; 

 upper plumage, dark; under parts, silvery white. 



ALchmophorus occidentalis . 

 Western Grebe. 

 See No. i. 



Family GAVIID^. Loons. 



special Characters: Bill, straight and pointed; tail, short; toes, 

 four ; front toes, palmate (full webbed ) ; tarsus, flattened ; hind toe, 

 with flap or small lobe ; legs placed far back near the tail. 



Loons. 



winter. 



